"No says that none of the cut material is essential for the film. He describes it as "some astro-visions, an orgy scene with Linda and the Japanese girl, the scene where you see [Oscar] waking up at the morgue and he thinks he's alive but he's not, and then the camera goes down the plughole where she's tipping his ashes."
i did skip a couple seconds during the 'trip' scenes, like pressed the arrow keys a couple times. i remember watchign that the first time and thinking this is taking forever and if i was on something i'd probably like this part a lot more but damn"